“This has probably been the most thoughtful set of questions I’ve had on this presentation,” Mike Giggey of Wright-Pierce told the citizens advisory committee on the town’s comprehensive water and nutrient management plan Sept. 13. He had just completed a review of a wastewater costs report prepared with support from the Association to Preserve Cape Cod, the Cape Cod Business Roundtable and the Cape Cod Water Protection Collaborative.

Before the questions began, Giggey ran through his methodology and findings for the report, which he’s been presenting around the county. Meant to guide towns in the preparation of their comprehensive wastewater management plans, the report looks at built individual, cluster, satellite, and centralized systems designed to remove nitrogen from groundwater. It examines economies of scale systems of various sizes and types to create a base case for evaluation.

Giggey, who warned that cost is not the only factor that should be considered in planning, reviewed best-case scenarios for the systems, noting the importance of density of development and potential cost of land for disposal.

The committee will meet Oct. 4 at 5 p.m. to review the draft needs assessment for the comprehensive wastewater management planning effort, and discuss the need for any additional studies.